Limiting adjusting and teaching fence for adjusting and teaching backup boars
By designing a limit training bar for reserve boar training, and using technical means such as L-shaped hooks and sliding doors, the problems of long training time and short supply life of boars in the existing technology are solved, and the effect of improving training efficiency and extending supply life of the essence is achieved.
Patent Information
- Application Number
- CN202421054731.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-05-14
AI Technical Summary
In the prior art, the training time of reserve boars is long, the boars are not focused and the exploration time is long, which leads to a shortened lifespan of sperm and an increased risk of injury.
A limit training bar is designed, which connects the fixed bar vertically through an L-shaped hook, and connects the door to the fixed bar in parallel. The sliding door and the fixed latch are set to form a stable rectangular structure, limiting the movement of the boar and improving safety.
The training time of reserve boars is shortened, the training efficiency is improved, the sperm life sperm of the boar is extended, the risk of personnel injury is reduced, and the training effect and management efficiency of the boars are improved.
Smart Images
Figure CN222870711U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a position limiting training fence used for training reserve boars. Background Art
[0002] At present, the pig farming industry has been developing towards scale and intensiveness, with artificial insemination technology accounting for more than 90%. Specialized boar stations have emerged, which can provide a large amount of semen for artificial insemination technology. At present, boar stations with 100-1000 boars in stock are the mainstream in China. Boars must be trained from the time of introduction to the time of semen collection. The successful training of reserve boars can, on the one hand, expand the genetic coverage of boars and save the boar breeding costs brought by natural breeding; on the other hand, it can improve the utilization rate of reserve boars and reduce the cost of introduction.
[0003] At present, the training of reserve boars is basically done in traditional large pens. On the one hand, the large area of large pens can easily cause the boars to lose concentration and spend a long time exploring. Ultimately, after a long period of training, the boars lose interest in climbing onto the semen collection platform, and their sperm supply life is shortened. Utility Model Content
[0004] In view of the deficiencies in the prior art, the present invention aims to shorten the training time of reserve boars, improve the training efficiency of reserve boars, extend the boar's semen supply life, and reduce the risk of personal injury. Therefore, a limited training fence for reserve boar training is designed.
[0005] The technical solution adopted by the utility model to solve its technical problems is:
[0006] A limited training fence for training reserve boars comprises a first fixed fence, a second fixed fence, a third fixed fence, a gate vertically connected to the second fixed fence and the third fixed fence, and a fake sow platform arranged in the limited training fence, wherein the first fixed fence is vertically connected to the second fixed fence and the third fixed fence at both ends by L-shaped hooks respectively, the second fixed fence and the third fixed fence are parallel, the gate is parallel to the first fixed fence, both ends of the gate are vertically connected to one end of the second fixed fence and the third fixed fence to form a rectangular structure, a sliding door is installed on the gate, a fixing pin is installed on the sliding door, and the fake sow platform is arranged in the rectangular structure formed by the first fixed fence, the second fixed fence, the third fixed fence and the gate.
[0007] Preferably, the first fixing bar is fixed to the ground with expansion screws, and L-shaped hooks are installed on both sides of the first fixing bar.
[0008] Preferably, the second fixing bar and the third fixing bar are fixed to the ground with expansion screws. The second fixing bar and the third fixing bar are parallel, and an L-shaped hook groove is provided on one end close to the first fixing bar, and a pin groove is provided on the other end. The L-shaped hook on the first fixing bar fits with the L-shaped hook groove on the second fixing bar and the third fixing bar, and is vertically connected to both ends of the first fixing bar.
[0009] Preferably, the gate is parallel to the first fixed fence and fixed to the ground with expansion screws, and both ends of the gate are equipped with pin slots of the same size as the second fixed fence and the third fixed fence, and are vertically connected to the other ends of the second fixed fence and the third fixed fence to form a matrix structure, and movable universal wheels are installed on both sides of the lower end of the gate.
[0010] Preferably, the long latch fits into latch slots at both ends of the second fixed fence, the third fixed fence, and the gate, and is locked after being inserted into the latch slots.
[0011] Preferably, the sliding door A and the sliding door B are installed on the barrier door, with the opening of the sliding door A facing the second fixed fence, and the opening of the sliding door B facing the third fixed fence. The sliding doors on both sides can be opened outward to the left and right. The sliding door A side is opened to drive the reserve boar into the training fence, and the sliding door B side is opened to release the reserve boar from the training fence to achieve double-sided door opening.
[0012] Preferably, the fixed latch is installed at the upper end of the sliding door B side to serve as a fixed sliding door B side switch to control the left and right movement of the sliding door B side.
[0013] Preferably, the fake sow platform is installed at one end of the third fixed fence in a rectangular structure formed by the first fixed fence, the second fixed fence, the third fixed fence and the gate. The height of the fake sow platform can be adjusted according to the size of the reserve boar.
[0014] Preferably, the first fixed fence, the second fixed fence, the third fixed fence and the gate are welded with hot-dip galvanized steel pipes and fixed to the ground with expansion screws. The first fixed fence, the second fixed fence, the third fixed fence and the gate are vertically connected to form a rectangular structure, and are made into a limited training fence for reserve boar training according to the size of the boar.
[0015] The beneficial effects of the utility model are:
[0016] By using L-shaped hooks to connect the fixed fences vertically, and connecting the barrier gate with the second fixed fence and the third fixed fence to form a rectangular structure with four sides, the stability of the entire limited training fence is increased, and the shaking or tilting that may occur during the training and training of boars is reduced; the installation of the sliding door can effectively limit the movement of the boar, and the setting of the fixed latch can ensure that the sliding door can be firmly locked when closed, thereby improving the safety of the boar training and training process and reducing the risk of injury; because the barrier gate is parallel to the first fixed fence, and the second fixed fence and the third fixed fence are arranged in parallel, the sliding door is installed on the barrier gate, and this design allows the boar to have enough space for activities in the limited training fence, and the position and action of the boar can be adjusted by opening and closing the sliding door; the design of the sliding door makes the use of the limited training fence more convenient, and the breeder can easily open and close the door to train, train and manage the boar, thereby improving the efficiency of the operation; the adjustable height setting of the fake sow platform can provide the boar with a comfortable place to stand for semen collection, thereby reducing the discomfort of the boar in the limited training fence, which is conducive to improving the training effect of the boar. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic diagram of an overall top view of a position-limiting training pen for training reserve boars according to the utility model;
[0018] Figure 2 This is a schematic diagram of a first fixed fence of a limited training fence used for training reserve boars according to the utility model;
[0019] Figure 3 This is a schematic diagram of a second fixed fence of a limited training fence used for training reserve boars according to the utility model;
[0020] Figure 4 This is a schematic diagram of the third fixed fence of a limited training fence used for training reserve boars according to the utility model;
[0021] Figure 5 The utility model is a schematic diagram of a limit training fence gate used for training reserve boars. DETAILED DESCRIPTION
[0022] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention. The present invention is described in more detail by way of example with reference to the accompanying drawings in the following paragraphs. The advantages and features of the present invention will become clearer according to the following description and claims. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.
[0023] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, it should be noted that, unless otherwise clearly specified and defined, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements.
[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.
[0025] Example 1
[0026] See also Figure 1-5 As shown, a limited training fence for training reserve boars includes a first fixed fence 1, a second fixed fence 2, a third fixed fence 3, a gate 4 vertically connected to the second fixed fence 2 and the third fixed fence 3, and a fake sow platform 5 placed in the limited training fence, characterized in that: the first fixed fence 1 is vertically connected to the second fixed fence 2 and the third fixed fence 3 at both ends by an L-shaped hook 11, the second fixed fence 2 and the third fixed fence 3 are parallel, the gate 4 is parallel to the first fixed fence 1, the two ends of the gate 4 are vertically connected to one end of the second fixed fence 2 and the third fixed fence 3 to form a rectangular structure, and a sliding door is installed on the gate 4, and a fixing pin 451 is installed on the sliding door, and the fake sow platform 5 is placed in the rectangular structure formed by the first fixed fence 1, the second fixed fence 2, the third fixed fence 3 and the gate 4.
[0027] The first, second and third fixed fences are vertically connected together using L-shaped hooks, and the barrier gate is connected to the second and third fixed fences to form a stable four-sided rectangular structure; this structure ensures the stability of the limited training fence and reduces the shaking or tilting that may be caused during boar training; the setting of the sliding door and the installation of the fixed latch further enhance the safety of the limited training fence, which can effectively limit the movement of the boar and ensure that the door is firmly locked when closed, reducing the risk of injury during boar training; the second and third fixed fences are arranged in parallel, and the barrier gate is parallel to the first fixed fence; this design allows the boar to be stable in the limited training fence. There is enough space for activities in the training pen, and the boar's range of movement can be controlled by adjusting the position of the barrier door; the setting of the sliding door makes it easy to adjust the boar's entry and exit, and further control the boar's position and behavior; the placement of the fake sow platform in the limited training pen provides the boar with a comfortable place to collect semen and stand; this is very important for the health and comfort of the boar, which can reduce the boar's discomfort in the limited training pen and help improve training results and management efficiency; the design of the sliding door makes the use of the limited training pen more convenient; the breeder can easily open and close the door to train and manage the boar, which improves the efficiency and convenience of the operation.
[0028] The first fixing fence 1 is fixed to the ground by expansion screws, and L-shaped hooks 11 are installed on both sides of the first fixing fence 1.
[0029] Using expansion screws to fix the first fixed fence to the ground can ensure that the limit training fence will not move or shake easily during use, thereby improving the stability and reliability of the entire structure; the setting of the L-shaped hook can increase the support force of the first fixed fence, making it more solid and less susceptible to external forces; the expansion screws can effectively fix the first fixed fence to the ground to prevent it from sliding or tilting during use. This helps to ensure the stability of the limit training fence and reduce unexpected situations that may be caused by boars during training; using expansion screws to fix the first fixed fence is a relatively simple installation method that does not require complex equipment or tools. Moreover, compared with other fixing methods, expansion screws are easier to maintain and replace, reducing maintenance costs and workload; this fixing method is suitable for various ground types, including concrete, cement, masonry, etc., and has strong applicability; whether indoors or outdoors, the first fixed fence can be installed on the ground using expansion screws to provide a stable environment for the training of reserve boars.
[0030] The second fixing bar 2 and the third fixing bar 3 are fixed to the ground with expansion screws. The second fixing bar 2 and the third fixing bar 3 are parallel to each other, and an L-shaped hook groove 22, 32 is installed on one end close to the first fixing bar 1, and a latch groove 23, 33 is installed on the other end. The L-shaped hook 11 on the first fixing bar 1 fits with the L-shaped hook groove 22, 32 on the second fixing bar 2 and the third fixing bar 3, and is vertically connected to the two ends of the first fixing bar 1.
[0031] The second and third fixed fences are firmly fixed to the ground using expansion screws, ensuring the overall stability of the limited training fence. By installing an L-shaped hook groove on one side of the first fixed fence and corresponding hooks on the second and third fixed fences, they can fit each other and be connected vertically; this connection method enhances the stability of the entire structure and prevents the boars from shaking or tilting during training; the connection method between the first, second and third fixed fences ensures that the boars have enough space to move in the limited training fence, and the boars' range of action can be controlled by adjusting the position of the latch; this design allows the boars' behavior to be flexibly adjusted as needed, thereby improving the training effect; the design of the hook groove and the latch groove makes the assembly and disassembly of the limited training fence more convenient. The breeder can easily adjust the position of the second and third fixed fences to meet different needs; moreover, the expansion screw fixing method is relatively simple and easy to maintain and replace.
[0032] The gate 4 is parallel to the first fixed fence 1 and fixed to the ground with expansion screws. Both ends of the gate 4 are equipped with pin grooves 41 of the same size as the second fixed fence 2 and the third fixed fence 3, and are vertically connected to the other ends of the second fixed fence 2 and the third fixed fence 3 to form a matrix structure. Movable universal wheels 42 are installed on both sides of the lower end of the gate 4.
[0033] The gate is parallel to the first fixed fence and fixed to the ground with expansion screws, ensuring the stability of the entire structure. The design of the parallel fixed fence prevents the boar from easily leaving the range of the limited training fence during training, ensuring the effectiveness of the training; the gate is equipped with latch slots of the same size as the second fixed fence and the first fixed fence on both sides, which ensures the stable connection between the gate and the second and third fixed fences. Through the design of the latch slot, the gate can be vertically connected to the other end of the second and third fixed fences, ensuring the safety and stability of the boar in the limited training fence; movable universal wheels are installed on both sides of the lower end of the gate, which makes the gate easy to move when opening and closing, improving the convenience of operation. The existence of universal wheels can also reduce friction and damage to the ground and extend the service life of the equipment; the design of the gate ensures the safety of the boar in the limited training fence, preventing it from accidentally escaping or getting injured; at the same time, the mobility and connection method of the gate ensure that the boar can enter and exit freely when needed, and at the same time, its range of movement can be restricted when needed, providing a safe and comfortable environment.
[0034] The long latch 43 fits with the latch grooves 23, 33, 41 at both ends of the second fixed fence 2, the third fixed fence 3, and the gate 4, and is locked after being inserted into the latch grooves 23, 33, 41.
[0035] The long latch fits in with the latch slots on both sides of the second fixed fence, the third fixed fence, and the gate, and is locked after being inserted into the latch slot. This design ensures a firm connection between the various components; this connection method can prevent the boar from accidentally moving or escaping during training, ensuring the safety of training; the design of the latch allows the gate and the fixed fence to be easily connected and separated. When the gate needs to be opened or closed, just insert or pull out the long latch in the latch slot, which is easy to operate and convenient for farmers to carry out daily management and maintenance; the design of the long latch allows the position of the gate to be flexibly adjusted; by inserting the latch slot at different positions, the degree of opening and closing of the gate can be controlled, thereby adjusting the range of movement of the boar; this flexibility can be adjusted according to actual needs, which improves the applicability and effect of the limit training fence; the long latch is usually made of strong and durable materials, such as steel or aluminum alloy, with strong durability and corrosion resistance; this design ensures the long-term stable operation of the limit training fence and reduces the maintenance and replacement costs of the equipment.
[0036] The sliding door A44 and the sliding door B45 are installed on the barrier door 4, the side opening of the sliding door A44 faces the second fixed fence 2, and the side opening of the sliding door B45 faces the third fixed fence 3. The sliding doors on both sides can be opened outward to the left and right. The side of the sliding door A44 is opened to drive the reserve boar into the training fence, and the side of the sliding door B45 is opened to release the reserve boar from the training fence to realize double-sided door opening.
[0037] Sliding door A and sliding door B are installed on the barrier gate, facing the second fixed fence and the third fixed fence respectively, and can realize the function of double-sided door opening; by opening the side of sliding door A, the reserve boar can be driven into the training fence; and by opening the side of sliding door B, the reserve boar can be released from the training fence; this design makes the operation more flexible and convenient for breeders to manage; the sliding doors on both sides can be opened outward to the left and right, and this design ensures the smoothness of boars entering and exiting the training fence; whether driving into the training fence or releasing it, the appropriate side opening door can be selected, reducing the complexity of operation; the design of the sliding door can effectively control the range of movement of the boar and ensure its safety; by controlling the opening and closing of the sliding door, the stay time and movement direction of the boar in the training fence can be flexibly adjusted, thereby improving the effectiveness and safety of training; installing the sliding door on the barrier gate can effectively save space; compared with the traditional door design, the side opening method of the sliding door is more suitable for places with limited space, making the equipment layout more compact and improving the utilization rate of the site.
[0038] The fixed latch 451 is installed at the upper end of the sliding door B45 side, serving as a switch for fixing the sliding door B45 side to control the left and right movement of the sliding door B45 side.
[0039] Installing the fixed latch at the upper end of the B side of the sliding door as a switch for fixing the B side of the sliding door can enhance the stability of the sliding door and provide better controllability; the latch is fixed at the upper end of the door, which can effectively prevent the door from shaking or getting off the track during the movement, thereby ensuring the stability of the sliding door; after installing the fixed latch, the left and right movement of the sliding door B can be controlled by the fixing and releasing of the latch, making the operation easier. The farmer only needs to insert or pull out the latch into or out of the latch slot to fix and release the sliding door, eliminating other complicated operating steps and improving the convenience of operation; the design of the fixed latch can ensure that the sliding door B will not move accidentally in a fixed state, thereby improving the safety and reliability of operation; when boars enter and exit the training pen, the stability of the sliding door is crucial to preventing accidents, and the installation of the fixed latch can effectively protect the safety of boars and farmers; the fixed latch is usually made of durable materials such as steel or aluminum alloy, which has strong durability and corrosion resistance; this design can ensure that the fixed latch remains in good use condition for a long time, reducing the maintenance and replacement costs of the equipment and improving the economy of the equipment.
[0040] The fake sow platform 5 is installed at one end of the third fixed fence 3 in a rectangular structure formed by the first fixed fence 1, the second fixed fence 2, the third fixed fence 3 and the gate 4. The height of the fake sow platform 5 can be adjusted according to the size of the reserve boar.
[0041] The fake sow platform is installed in the four-sided rectangular shape formed by the first fixed fence, the second fixed fence, the third fixed fence and the gate, which can adapt to the body size of reserve boars of different sizes; by adjusting the height of the fake sow platform, it can be adjusted according to the body size of the reserve boar to ensure the comfort and safety of the boar in the training pen; because the fake sow platform is installed in the rectangular space formed by the fixed fence and the gate, its position and height can be flexibly adjusted as needed; the breeder can freely adjust the position and height of the fake sow platform according to different scenarios and needs to meet the training and management requirements of the reserve boar; the fake sow platform is installed in the rectangular space formed by the fixed fence and the gate, which makes full use of the space inside the training pen and improves the space utilization rate. This design avoids extra space waste and makes the design of the training pen more compact and efficient; the fake sow platform is installed in the space between the fixed fence and the gate, which can be effectively fixed inside the training pen, improving the stability and safety of the training pen. No matter how much force the reserve boar is moving on the platform, the fake sow platform can be firmly supported, reducing the possibility of accidents.
[0042] The first fixed fence 1, the second fixed fence 2, the third fixed fence 3, and the gate 4 are welded with hot-dip galvanized steel pipes and fixed to the ground with expansion screws. The first fixed fence 1, the second fixed fence 2, the third fixed fence 3, and the gate 4 are vertically connected to form a rectangular structure, and are made into a limited training fence for reserve boar training according to the size of the boar.
[0043] The fixed fence and gate welded with hot-dip galvanized steel pipes have high corrosion resistance and durability, and can be used in the farm environment for a long time without rusting or damage. At the same time, by using expansion screws to fix to the ground, it can ensure that the fixed fence and gate are firmly fixed to the ground and are not easy to loosen or move; the first fixed fence, the second fixed fence, the third fixed fence and the gate are connected to each other to form a four-sided rectangular structure, which enhances the stability of the entire training fence; this structure makes the space inside the training fence more stable, which can effectively prevent the unnecessary activities of the boars during the training process and improve the safety of the training process; the boar training limit training fence made according to the size of the boar can be adjusted according to the size of different boars, ensuring that the boar's activity space in the training fence is neither too crowded nor too spacious, so as to better achieve the purpose of training; the fixed fence and gate welded with hot-dip galvanized steel pipes are not only highly durable, but also easy to clean and maintain. Farm staff can regularly clean and check the training fence to keep it in good condition and extend its service life. The fixed fence and gate welded with hot-dip galvanized steel pipes and fixed to the ground with expansion screws can ensure stability and durability while being relatively economical and affordable, meeting the cost control requirements of farm equipment.
[0044] The above-mentioned embodiments of the utility model are not intended to limit the protection scope of the utility model, and the implementation methods of the utility model are not limited to these. All other various forms of modifications, replacements or changes made to the above-mentioned structure of the utility model based on the above-mentioned contents of the utility model, in accordance with the common technical knowledge and customary means in the field, without departing from the above-mentioned basic technical ideas of the utility model, should fall within the protection scope of the utility model.
Claims
1. A limited position training pen for training reserve boars, comprising a first fixed pen, a second fixed pen, a third fixed pen, a barrier gate vertically connected to the second fixed pen and the third fixed pen, and a fake sow platform placed in the limited position training pen, characterized in that: The first fixed fence is vertically connected to the second fixed fence and the third fixed fence at both ends by L-shaped hooks respectively, the second fixed fence is parallel to the third fixed fence, the barrier door is parallel to the first fixed fence, both ends of the barrier door are vertically connected to one end of the second fixed fence and the third fixed fence to form a rectangular structure, the sliding door is installed on the barrier door, the fixing pin is installed on the sliding door, and the fake sow platform is placed in the rectangular structure formed by the first fixed fence, the second fixed fence, the third fixed fence and the barrier door.
2. The position limiting training stall for training reserve boars according to claim 1, characterized in that: The first fixing bar is fixed to the ground by expansion screws, and L-shaped hooks are arranged on both sides of the first fixing bar.
3. The position limiting training stall for training reserve boars according to claim 1, characterized in that: The second fixing bar and the third fixing bar are fixed to the ground with expansion screws. The second fixing bar and the third fixing bar are parallel to each other, and an L-shaped hook groove is installed on one end close to the first fixing bar, and a latch groove is installed on the other end. The L-shaped hook on the first fixing bar fits with the L-shaped hook groove on the second fixing bar and the third fixing bar, and is vertically connected to both ends of the first fixing bar.
4. The position limiting training stall for training reserve boars according to claim 1, characterized in that: The gate is parallel to the first fixed fence and fixed to the ground with expansion screws. Both ends of the gate are equipped with pin grooves of the same size as the second fixed fence and the third fixed fence, and are vertically connected to the other ends of the second fixed fence and the third fixed fence to form a matrix structure. Movable universal wheels are installed on both sides of the lower end of the gate.
5. The position limiting training stall for training reserve boars according to claim 1, characterized in that: The latch slots at both ends of the second fixed fence, the third fixed fence and the barrier gate are provided with long latches that fit each other and are locked after being inserted into the latch slots.
6. The position limiting training stall for training reserve boars according to claim 1, characterized in that: The sliding door A and the sliding door B are installed on the barrier door. The opening of the sliding door A side faces the second fixed fence, and the opening of the sliding door B side faces the third fixed fence. The sliding doors on both sides can be opened outward to the left and right. The sliding door A side is opened to drive the reserve boar into the training fence, and the sliding door B side is opened to release the reserve boar from the training fence to achieve double-sided door opening.
7. The position limiting training stall for training reserve boars according to claim 1, characterized in that: The fixed latch is installed at the upper end of the sliding door B side and serves as a fixed sliding door B side switch to control the left and right movement of the sliding door B side.
8. The position limiting training stall for training reserve boars according to claim 1, characterized in that: The fake sow platform is installed at one end of the third fixed fence in a rectangular structure formed by the first fixed fence, the second fixed fence, the third fixed fence and the barrier gate. The height of the fake sow platform can be adjusted according to the size of the reserve boar.
9. The position limiting training stall for training reserve boars according to claim 1, characterized in that: The first fixed fence, the second fixed fence, the third fixed fence and the gate are welded with hot-dip galvanized steel pipes and fixed to the ground with expansion screws. The first fixed fence, the second fixed fence, the third fixed fence and the gate are vertically connected to form a rectangular structure, and are made into a limited training fence for reserve boar training according to the size of the boar.